Stone-sawing-machine gage



(No Model.)

L. MELUHIOR 82; P. MEYER.-

STONE SAWING MACHINE GAGE.

Patented Feb. 5, 1889.

I llhllhlm Ill/VEIVTO/i ATTORNEY UNITE STATES PATENT QEEIQE.

LUDlVIG MELCIIIOR AND FRIEDRICH MEYER, OF \YILMINGTON, DELAIVARE.

STONE-SAWlNG-MACHINE GAGE.

SPECIFICATION forming part of Letters Patent No. 397,244, dated February5, 1889.

Application filed March 20, 1888.

To all whom it 17mg concern.-

Be it known that we, Lunwie MELoHIoR and FRIEDRICH MEYER, of\Vilmingtou, in the county of New Castle and State of Dela ware, haveinvented new and useful Improvements in Stone-Sawing-Machine Gages, ofwhich the following is a specification.

Our invention is an improvement in stonesawing machines, andparticularly in that class of such machines in which a gang of saws issecured in a reciprocatingframe; and the invention consists in the novelconstruc; tion and combinations of parts, as will be hereinafterdescribed and claimed.

As the constructions for supporting, adj usting, and operating thereciprocating frame form no part of the present invention, it is notnecessary to show or describe the same herein.

In the drawings, Figure 1 is a perspective view of the improvements.Fig. 2 is a sectional view on about line 50.1, Fig. 1. Fig. 3 is adetail view of one of the hook-bolts. Fig. l is a detail view of one ofthe clamps. Fig. 5 is a detail view of one of the guides, and Fig. 6

2 5Iis a detail view of the bracket intended for use with frames havingsquare side bars.

The frame A may be of ordinary construction, as shown, with side bars,B, and end bars, C, the latter being slotted longitudinally for thepassage of the hook-bolts D, which secure the saws E in the frame, sothe said saws may be adjusted laterally to set them toward or from eachother, as desired.

In this class of machines it has been common heretofore to place betweenthe saws, immediately inside of the end bars, 0, blocks, which serve tokeep such saws properly apart, and such blocks may be provided indifferent sizes, so the saws may be held different distances apart. Ourimprovements avoid the necessity of these filling-blocks and provide forbracing and guiding the saws in sawing short stones at points betweenthe ends of the frame, and preferably between the opposite ends of theshort work or stones and the ends of the frame. To this end we providethe brace-bars G, which extend between the sides of the frame, and areconnected at their ends adj ustably to the side bars thereof. Inconnecting the ends of the cross-brace bars to the sides of thesaw-frame we prefer to em- Serial No. 267,918. (No model.)

ploy clamps II. In Figs. 1, 2, and at these clamps Hare shown asprovided near their upper ends with sockets 71', to receive the ends ofthe cross-bars, and with screws h, to secure them to said cross-bars,while their lower ends curve outward at 76" and are provided with screws71 In use the said clamps are placed on the bars G, with the ends of thelatter proj ected sufficiently to rest on the side bars, B, the portions72' of the clamp projecting out under the bars B, and the set-screws713, turning against the said side bars, serve to keep thecross-bars inany desired adjustment along the side bars. This form of clamp may beused on square side bars,B, aswell as round ones; but it is preferred touse it only on the round side bars, and to use the bracket shown in Fig.6 when the side bars, B, are square. The said bracket (shown in Fig. 6)has arms and 2, to project above and below the side bars, B, which armssupport screws 3, by which the clamp may be held to the side bars. Thisclamp, like that shown in Fig. 1, has a socket, 71 and set-screw h, toreceive and secure the cross-bar. The cross-bar is preferably formedwith a rib or rail, g, extended along its upper edge, and it isgraduated according to any suitable scale, so the adjustable guides,presently described, may be accurately set thereon, as may be desired.

Theguides I are fitted on and adjustable along the cross-bars G. In theconstruction shown the guides have openings 71, through which thecross-bars G are passed, and setscrews 2" serve to secure the saidguides in any suitable adjustment on the cross-bar. By preference theseguides are formed below the cross-bar, with downwardly-facing shouldersI, which form bearings for the upper edges of the sav 's.

Heretofore in the sawing of short stones the sa'vs, when operated underany considerable weight or at all fast, have been found to bend, twist,and buckle, so that to practically saw such short stones it has been.necessary to run the saws under very little weight and at a low rate ofspeed, rendering the oper tion. slow, and consequently expensive. Our

braces, comprising the cross-bars and 'the guides thereon, between theends of the sawearryin frames, and in practice arran sueh guide-braceson opposite sides of the stone or work to be aeeqinplished-that is tosay, be-

5 tween sueh work and the ends of the sawst no upward curving or archingol;' the saws is possible, thus insuring a speedier sawing, as well ascausing the saws to make a eleaner eut, as will be understood.

Having thus described our invent ion, what we claim as new is 1. Anattaelunent, st'ibstz'tntially as deseribed, comprising a eross-bar,guides thereon, and clamps having near one end sockets in which the endsof the eross-bar may be seeured, and having their lower ends eurvedoutward and provided with a elamping-sm't-w, substantially as set forth.

2. In a stone-sau-ing apparatus, the eombination, with the-frame havingside bars, ot' the cross-bar having guides for the saws, the (SlillllPShaving openings fitted to receive the cross bar, sueh clamps beingat'ljustable along the side bars of the frame, and set-serews liorscouring the ela'mps in any suitable adjust ment along said side bars,substantially as set forth.

3. The hereiirtlesm'il'ietl improvement in stone-sawing apparatus, eom'n'ising a crossbar provided. with guides for the saws, and clampseonneeted adjustably with the ends ot' said cross-bar, said clamps beingprovided with set-sm'ews, whtnieby they may be seeured in any suitableadjustment along the side bars of the saw-earrying trame, substantiallyas set forth.

4. In a sttnie-sawin g apparatus, a eross-bar provided with guidessecured on and adjustable therealon such guides being provided on theirsides with downwanl'ly-l aeing shoulas and For the purposes t"aeii'|gshoulders, substantially as set forth.

LUD'WIG M Elftllltm. 'l lEill' l'liRltll MEYER.

\Vitnesses:

ttsonoe ON EILL, (llARLEH UPPlCN'lEUlLJ ll-i.

